EP0181004A1 - Dispositif de réglage automatique pour frein, en particulier pour frein de tambour pour véhicules - Google Patents

Dispositif de réglage automatique pour frein, en particulier pour frein de tambour pour véhicules Download PDF

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Publication number
EP0181004A1
EP0181004A1 EP85114240A EP85114240A EP0181004A1 EP 0181004 A1 EP0181004 A1 EP 0181004A1 EP 85114240 A EP85114240 A EP 85114240A EP 85114240 A EP85114240 A EP 85114240A EP 0181004 A1 EP0181004 A1 EP 0181004A1
Authority
EP
European Patent Office
Prior art keywords
housing
bore
coupling
sealing sleeve
support part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85114240A
Other languages
German (de)
English (en)
Other versions
EP0181004B1 (fr
Inventor
Harald Gockel
Reiner Thewaldt
Wilfried Giering
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of EP0181004A1 publication Critical patent/EP0181004A1/fr
Application granted granted Critical
Publication of EP0181004B1 publication Critical patent/EP0181004B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
    • F16D65/561—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake
    • F16D65/562—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting within the confines of a drum brake arranged between service brake actuator and braking member, and subjected to service brake force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/66—Wedges

Definitions

  • the invention is therefore based on the object of developing an actuating device of the type described at the outset in such a way that its functionality is maintained as long as possible even when used under the toughest operating conditions and the maintenance of the actuating device is facilitated.
  • the object is achieved in that the support member and the sealing sleeve are attached to the housing separately.
  • the sealing sleeve can be easily removed without the support member needing to be removed; the risk that the support part is accidentally removed is reduced, if not excluded, by the separate attachment to the housing.
  • the actuating device according to the invention which is otherwise completely assembled, can be filled with grease without the risk that the coupling spring will pop out and then the coupling part will also fall out.
  • the sealing sleeve has a rigid fastening ring with an L-shaped cross section, which is press-fitted to an outer surface of the housing and holds an annular elastic edge of the sealing sleeve clamped between itself and an end face of the housing.
  • the strength of the press fit is completely independent of the preload of the clutch spring.
  • the lateral surface is formed by an expansion of the bore in the housing.
  • the fastening ring which is L-shaped in cross section, engages in the extension of the bore and the support part is arranged more or less protected within it.
  • the enlargement of the bore has a shoulder behind which the support part is detachably held.
  • This detachable holder for example as a bayonet catch.
  • the shoulder can be formed by a locking ring which is elastically engaged in an annular groove in the extension of the bore.
  • the support part preferably has a slotted flange which is snapped directly into an annular groove in the extension of the bore.
  • the actuating device shown has a housing 10, which is designed in a conventional manner approximately T-shaped and is intended to be attached to the substantially circular brake shield of a drum brake.
  • the housing 10 has a central recess 12 and a transverse, substantially cylindrical bore 14.
  • the central recess 12 penetrates the bore 14, whereby it is divided into two sections of equal size; the actuating device is overall symmetrical to the normal plane of the recess 12 on the plane of the drawing in FIG. 1.
  • a rod 18 extends axially through the compression spring 16, one end of which, remote from the housing 10, is designed for interaction with a force output device, not shown, for example a pneumatic piston-cylinder unit.
  • the other end of the rod 18, which is arranged within the central recess 12, is designed as an expanding wedge 20 and engages between two rollers 22 which are mounted in a cage 24.
  • the cage 24 is displaceable with respect to the housing 10 and the rod 18 in the longitudinal direction thereof.
  • the end of the rod 18 facing away from the housing 10 is centered with respect to the corresponding end of the compression spring 16 by an annular disk 26; in a region closer to the housing 10, a sleeve 28 is seated on the rod 18 and seals against the housing 10 or a component which is tightly connected to it.
  • the bolt-shaped threaded part 36 has an annular groove 40 on an end section protruding from the sleeve-shaped threaded part 34 and the housing 10, outside of which there is an external toothing 42, which cooperates with an elastic bracket 44 as an anti-rotation device, and finally a flat end face 46, which is used for the interaction with one end of an associated brake shoe is formed.
  • a conical inner coupling surface 48 is formed around each of the two sections of the transverse bore 14, coaxially with this, to which a complementary, annular coupling part 50 is assigned.
  • the coupling part 50 lies between the coupling surface 48 and the associated sleeve-shaped threaded part 34 and forms with it a self-locking thread pairing 52 with an axial play which determines the size of the brake release play of the associated brake.
  • the conical inner coupling surface 48 of each of the two sections of the transverse bore 14, with respect to the housing 10 to the outside, is adjoined by a cylindrical extension 54 which begins with a flat annular shoulder 56 and has an annular groove 57 at a short distance further out , in which an elastic locking ring 58 is inserted.
  • a cup-like support portion 60 with a formed on it outer radial flange 62 geh 2 1 st.
  • the support member 60 has, adjacent to the outer Flange 62, a cylindrical middle section 64, to which a radially inwardly projecting flange 66 with a central opening 68 is connected axially further out.
  • the rubber or other elastomer material of the sealing sleeve 72 covers the fastening ring 74 on the radially inner side of its cylindrical collar and on the axially outer side of its flange, extends around its radially outer edge and forms on the axially inner side facing the housing 10 this flange has an elastic edge 76 which seals against a flat end face 78 of the housing 10.
  • an edge bead 80 is formed which engages in the annular groove 40 of the bolt-shaped threaded part 36 and also seals there.
  • annular seal 82 is vulcanized onto the radially inner side of the flat flange formed on the fastening ring 74 and engages in an annular groove 84 on the end face 78 of the housing 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
EP85114240A 1984-11-08 1985-11-08 Dispositif de réglage automatique pour frein, en particulier pour frein de tambour pour véhicules Expired EP0181004B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8432744U DE8432744U1 (de) 1984-11-08 1984-11-08 Nachstellbare Betätigungsvorrichtung für Bremsen, insbesondere Fahrzeug-Trommelbremsen
DE8432744U 1984-11-08

Publications (2)

Publication Number Publication Date
EP0181004A1 true EP0181004A1 (fr) 1986-05-14
EP0181004B1 EP0181004B1 (fr) 1988-09-28

Family

ID=6772487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114240A Expired EP0181004B1 (fr) 1984-11-08 1985-11-08 Dispositif de réglage automatique pour frein, en particulier pour frein de tambour pour véhicules

Country Status (6)

Country Link
US (1) US4688661A (fr)
EP (1) EP0181004B1 (fr)
CN (1) CN85108914B (fr)
BR (1) BR8505595A (fr)
DE (2) DE8432744U1 (fr)
ES (1) ES296321Y (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261903A2 (fr) * 1986-09-26 1988-03-30 LUCAS INDUSTRIES public limited company Mécanisme d'actionnement à coin et rouleaux
DE3816617A1 (de) * 1987-05-14 1988-12-01 Akebono Brake Ind Automatische einstellvorrichtung fuer den arbeitsspalt einer bremse

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0529537Y2 (fr) * 1988-07-13 1993-07-28
US5010780A (en) * 1990-05-15 1991-04-30 Plastic Industries, Inc. Device for actuating a remotely positioned spring-biased latch
JP3694801B2 (ja) * 1997-06-10 2005-09-14 日清紡績株式会社 ブレーキシューの作動装置
GB9806543D0 (en) * 1998-03-26 1998-05-27 Lucas Ind Plc Disc brake seal assembly
DE102006040754B3 (de) * 2006-08-31 2008-03-27 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Scheibenbremse, insbesondere für ein Nutzfahrzeug
US20080177330A1 (en) * 2006-10-24 2008-07-24 Ralph James D Self-locking screws for medical implants

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107366A (en) * 1963-12-14 1968-03-27 Dunlop Co Ltd Improvements in disc brakes
GB1128167A (en) * 1965-07-30 1968-09-25 Girling Ltd Improvements in and relating to disc brakes
US3540554A (en) * 1968-08-29 1970-11-17 Bendix Corp Heat shield for brake adjuster
DE1655405A1 (de) * 1951-01-28 1971-08-05 Teves Gmbh Alfred Hydraulische Bremse mit Servo-Wirkung,insbesondere sogenannte Duplex-Servo-Bremse
FR2152003A5 (fr) * 1971-08-31 1973-04-20 Teves Gmbh Alfred
GB1355959A (en) * 1970-11-23 1974-06-12 Automotive Prod Co Ltd Disc brakes
US3822003A (en) * 1973-02-22 1974-07-02 Rockwell International Corp Automatic brake adjustment mechanism
GB1412151A (en) * 1972-11-09 1975-10-29 Gilling Ltd Extensible strut adjuster with overload prevention device
FR2286301A1 (fr) * 1974-09-25 1976-04-23 Teves Gmbh Alfred Dispositif de reglage pour pistons de travail a fonctionnement hydraulique
DE2757050A1 (de) * 1976-12-21 1978-06-29 Girling Ltd Betaetigungsvorrichtung fuer fahrzeugbremsen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2100488A (en) * 1936-06-03 1937-11-30 Gen Motors Corp Brake adjustment
US3068964A (en) * 1960-06-17 1962-12-18 Rockwell Standard Co Automatic brake adjustment
US3361232A (en) * 1966-05-02 1968-01-02 Eaton Yale & Towne Brake adjuster
US3800920A (en) * 1973-04-27 1974-04-02 Gen Motors Corp Self-energized disc brake parking brake integral with a non-energized service disc brake
SE387591B (sv) * 1975-07-14 1976-09-13 Bromsregulator Svenska Ab Spelrumsefterstellningsapparat inbyggd i en bromsenhet for ett relsfordons bromssystem
US4270442A (en) * 1978-02-07 1981-06-02 Garlock Inc. Disc brake boot
US4399894A (en) * 1979-02-14 1983-08-23 Kelsey-Hayes Company Push rod slack adjuster
US4327925A (en) * 1979-08-06 1982-05-04 Garlock Inc. Disc brake boot seal method and article
GB2080894A (en) * 1980-07-23 1982-02-10 Lucas Industries Ltd Vehicle braking actuator
US4535875A (en) * 1982-03-09 1985-08-20 Lucas Industries, Public Limited Company Actuator for an internal shoe drum brake

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1655405A1 (de) * 1951-01-28 1971-08-05 Teves Gmbh Alfred Hydraulische Bremse mit Servo-Wirkung,insbesondere sogenannte Duplex-Servo-Bremse
GB1107366A (en) * 1963-12-14 1968-03-27 Dunlop Co Ltd Improvements in disc brakes
GB1128167A (en) * 1965-07-30 1968-09-25 Girling Ltd Improvements in and relating to disc brakes
US3540554A (en) * 1968-08-29 1970-11-17 Bendix Corp Heat shield for brake adjuster
GB1355959A (en) * 1970-11-23 1974-06-12 Automotive Prod Co Ltd Disc brakes
FR2152003A5 (fr) * 1971-08-31 1973-04-20 Teves Gmbh Alfred
GB1412151A (en) * 1972-11-09 1975-10-29 Gilling Ltd Extensible strut adjuster with overload prevention device
US3822003A (en) * 1973-02-22 1974-07-02 Rockwell International Corp Automatic brake adjustment mechanism
FR2286301A1 (fr) * 1974-09-25 1976-04-23 Teves Gmbh Alfred Dispositif de reglage pour pistons de travail a fonctionnement hydraulique
DE2757050A1 (de) * 1976-12-21 1978-06-29 Girling Ltd Betaetigungsvorrichtung fuer fahrzeugbremsen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261903A2 (fr) * 1986-09-26 1988-03-30 LUCAS INDUSTRIES public limited company Mécanisme d'actionnement à coin et rouleaux
EP0261903A3 (fr) * 1986-09-26 1989-06-14 LUCAS INDUSTRIES public limited company Mécanisme d'actionnement à coin et rouleaux
DE3816617A1 (de) * 1987-05-14 1988-12-01 Akebono Brake Ind Automatische einstellvorrichtung fuer den arbeitsspalt einer bremse

Also Published As

Publication number Publication date
ES296321Y (es) 1988-02-16
CN85108914A (zh) 1986-05-10
BR8505595A (pt) 1986-08-12
US4688661A (en) 1987-08-25
DE8432744U1 (de) 1986-03-06
ES296321U (es) 1987-08-01
CN85108914B (zh) 1988-08-10
DE3565304D1 (en) 1988-11-03
EP0181004B1 (fr) 1988-09-28

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